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Contingencies, Guarantees, Indemnifications and Leases - Leases (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Assets |  |  |
Operating lease assets | $ 151.4 | $ 176.7 |
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization | Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization |
Finance lease assets | $ 67.6 | $ 73.9 |
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization | Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization |
Total lease assets | $ 219.0 | $ 250.6 |
Liabilities |  |  |
Operating lease liabilities | $ 150.6 | $ 175.6 |
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities |
Finance lease liabilities | $ 69.0 | $ 74.8 |
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities |
Total lease liabilities | $ 219.6 | $ 250.4 |
Finance lease cost: |  |  |
Amortization of right-of-use assets | 29.8 | 32.9 | $ 34.0
Interest on lease liabilities | 2.6 | 1.9 | 1.2
Operating lease cost | 55.3 | 56.1 | 61.6
Other lease cost | 9.2 | 9.5 | 12.4
Sublease income | (0.5) | (0.3) | (1.5)
Total lease cost | 96.4 | 100.1 | 107.7
Payments for operating leases | 50.3 | 60.1 | 58.3
Payments for finance leases | 32.0 | 34.3 | $ 35.1
Operating leases, payments due for the twelve months ending December 31: |  |  |
2025 | 46.1 |  |
2026 | 41.2 |  |
2027 | 32.8 |  |
2028 | 18.6 |  |
2029 | 8.5 |  |
2030 and thereafter | 20.7 |  |
Total lease payments | 167.9 |  |
Less: interest | 17.3 |  |
Present value of lease liabilities | $ 150.6 | $ 175.6 |
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities |
Finance leases, payments due for the twelve months ending December 31: |  |  |
2025 | $ 29.1 |  |
2026 | 24.5 |  |
2027 | 14.9 |  |
2028 | 4.3 |  |
Total lease payments | 72.8 |  |
Less: interest | 3.8 |  |
Present value of lease liabilities | $ 69.0 | $ 74.8 |
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities |
Total leases, payments due for the twelve months ending December 31: |  |  |
2025 | $ 75.2 |  |
2026 | 65.7 |  |
2027 | 47.7 |  |
2028 | 22.9 |  |
2029 | 8.5 |  |
2030 and thereafter | 20.7 |  |
Total lease payments | 240.7 |  |
Less: interest | 21.1 |  |
Present value of lease liabilities | $ 219.6 | $ 250.4 |
Weighted-average remaining lease term and weighted-average discount rates |  |  |
Weighted average remaining lease term, Operating leases | 5 years 6 months | 6 years | 6 years 4 months 24 days
Weighted average remaining lease term, Finance leases | 2 years 9 months 18 days | 3 years | 2 years 9 months 18 days
Weighted-average discount rate, Operating leases | 3.70% | 3.60% | 3.60%
Weighted-average discount rate, Finance leases | 4.00% | 3.50% | 1.70%

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition Indicates line item in statement of financial position that includes operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-2 + Details
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition Indicates line item in statement of financial position that includes operating lease right-of-use asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-2 + Details
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- Definition Weighted average discount rate for operating lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Amount of sublease income excluding finance and operating lease expense. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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